Manufacturing processes

Our large stock holding abilities allow us to keep our manufacturing lead time as short as possible and maintain our high stock levels. This also ensures we’re able to efficiently service customers with large bulk orders as well as customers with smaller orders.

We have material suitable for sizes ranging from M4 to M64 and in a variety of material grades, including: Mild steel, EN8, EN1A/Free-cutting steel, Grade 8.8, Grade 10.9, Grade 12.9, EN19T, Stainless steel 304, Stainless steel 316 and brass.

Cropping is an essential manufacturing process which is carefully controlled to ensure the correct cut-length is achieved. Routine inspections are carried out to ensure quality control is maintained.

Material is cropped to length using automated croppers, suitable for high volume and high speed, or manual croppers where precision and control is required.

Saw cutting is required to achieve a smooth, clean cut necessary for specific product applications or following manufacturing operations.

Saw cutting machines are carefully set to cut the correct length and routine quality inspections are conducted to ensure the length and cut quality are up to standard.

Thread rolling is a cold metal forging process that forms threads with the use of roller dies under high pressure - no material is removed from the rod. Thread rolling is generally faster and more cost efficient than other methods, plus rolled threads can be up to 20% stronger than screw-cut threads.

We are capable of precisely thread rolling sizes ranging from M4 to M64 and our operators are equipped with screw-ring gauges to perform regular inspections. Rolled threads are suitable when strong threads, precise dimensions and an even surface is required.

Screw-cutting is a process that removes steel from the surface of a round bar to form a thread with the use of thread chasers. Screw-cut threads have few limitations on the diameter and pitch of threads, so this allows us to easily cut uncommon or special threads.

We offer a variety of thread specifications including: UNC, UNF, BSW and BSF.

U-bolts, eyebolts, hook-bolts and a variety of other bent products are sent to our bending department to be bent to shape according to specification or drawing. Operators ensure threads are protected during the bending process and regularly measure dimensions and perform checks with fitment gauges.

We develop custom manufacturing solutions and tooling for large scale production runs to ensure you are able to meet and exceed your deadlines.

T&I Chalmers Engineering now offers qualified welding services performed by qualified welders with CO2 welding equipment, ensuring high-quality, compliant, and structurally sound results across a range of applications. Our capabilities include foundation bolt welding, bolt welding, and plate welding, enabling the production of ready-to-install components such as welded foundation bolts, base plates, and rod assemblies. By integrating certified welding into their manufacturing process, the company delivers consistent quality, reduced lead times, and a complete, reliable solution for custom-engineered fasteners and structural products.

T&I Chalmers Engineering offers professional engraving and pin marking services, providing precise and durable steel marking on products such as threaded rods, foundation bolts, plates, and custom components. We deliver high-quality custom engraving, including rod end marking, part numbers, batch codes, and branding, ensuring clear identification and improved traceability. Our batch engraving supports consistent marking across large volumes. Unlike labels or paint, pin marking creates a permanent impression that withstands harsh industrial conditions, making it ideal for long-term use.

Electro-plating or electro-galvanising is a process that forms a zinc layer on a steel surface, providing protection and an excellent finish. We work closely with our Electroplating suppliers to meet required specifications, maintain high quality levels and meet deadlines.

We offer a range of electro-plating options including:

• Zinc Blue passivate - A bright blue to blue/purple coating which is most commonly used.
• Zinc Yellow passivate - An iridescent yellow coating which offers excellent corrosion resistance.
• Black passivate - A glossy or matte black finish which is an excellent base for paint, enamel or lacquer.

Hot-Dip Galvanising is a process that forms a thick zinc coating on a steel surface by submerging cleaned steel into a bath of molten zinc. The zinc reacts with the steel surface to form multiple layers of zinc alloy that provide excellent corrosion protection and a dull grey finish.

We have developed strong relationships with our Hot Dip Galvanising suppliers in an effort to ensure excellent quality HDG and shorten lead times.